Louis hendler



Patented Apr. 9, 1929.

LOUIS HENDLER, OF PHILADELPHIA, PENNSYLVANIA WAR, AIID HIS SUCOESSOIR-SIN OFFICE, IN TRUST UNITED STATES.

FOR THE FICE.

, ASSIGNOR TO SECRETARY OF GOVERNMENT OF THE IGNITING MIXTURE FOR TRACERCOMPOSITIONS.

No Drawing.

Application filed October 22, 1923. Serial No. 670,096.

( GRANTED UNDER THE ACT OF MARCH 3, 1883, AS AMENDED APRIL 30, 1928; 3700. G. 757.)

The invention described herein may be manufactured and used by or forthe Government for governmental purposes without the payment to me ofany royalty thereon.

The subject of the present invention is an igniting mixture for tracercompositions.

The primary object'of my invention is the provision of a compositionwhich will serve to ignite the basic mixtures of a tracer shell.

lVith the foregoing and other objects in view, my invention resides inthe novel arrangement and combination of ingredients hereinafterdescribed and claimed, it being understood that changes in the preciseembodimcnt of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention. 4 g

With certain types of tracer compositions it is advisable to employ anigniting mixture which will be considerably more insensitive than thetracer composition itself and which will serve to ignite thatcomposition. These igniting mixtures are comparable in function to thedetonating agents employed in explosive shells.

An igniting mixture such as forms the subj ect of my invention will becomposed essentially of comparatively small proportions of a suitablefuel and a considerably greater proportion of a powerful oxidizing agentor agents.

One igniting mixture which has been tested and proved successful inpractice is made according to the following formula:

Per cent. Barium nitrate (90% pure) 89.5 Magnesium 10.5

It is by no means intended, however, to

40 limit my invention to the composition given either in the ingredientsused or the proportions cited, for it has been found that for themagnesium, aluminum powder or any other suitable fuel may besubstituted, according to the molecular equivalent of magnesium,

while instead of a portion of the barium peroxide, red lead or any othersuitable oxidizmg agent may be employed as in the following compositionPercent Barium peroxide -66.6 Red lead (Pb O -l 11.1 Magnesium 22.3

, ducing the temperature of combustion but is also an efficient binder,so that the mixture containing the red lead may be more readily pelletedwhen desired.

I claim 1. An igniting mixture for tracers including a peroxide of analkali earth metal, red lead and a metallic fuel.

2. An igniting mixture for tracers including barium peroxide, red leadand a metallic fuel.

3. An igniting mixture for tracers including barium slum.

peroxide, red lead and magne- 4. An igniting mixture fortracers-includmg four parts or less of a peroxlde of an alkali earthmetal and one fuel.

part of a metallic 5. An igniting mixture for tracers including bariumperoxide approximately 66%, red lead approximately 11% and magnesiumapproximately 22%.

6. An igniting mixture for tracers including barium peroxideapproximately 66%, red lead approximately 11% and a metallic fuel,

approximately 22%.

LOUIS HENDLER.

